I don't remember experiencing this with my previous pregnancies. My lmp started on the 4th so I should have ovulated between the 16th and 20th and my next period should begin on Aug 1st. DH and I DTD on the 17th and today I've been experiencing menstral-like cramping accompanied with a dull lower back ache and a bit of a headache. Has anyone experienced this after ovulation? What was the result? Pregnant/not pregnant?